Ключевые слова: astigmatism, care, chart, check, clinic, diagnosis, diagnostic, doctor, examination, eye, eyeglasses, glasses, health, healthy, iris, lens, look, looking, medical, medicine, myopia, oculist, ophthalmologist, ophthalmology, optical, optician, optometrist, optometry, patient, pupil, retina, see, sight, test, vision, visual,